Adjustable drippers allow the option of changing the flow rate of water to each individual plant. It is as simple as twisting the dial on the dripper toward the "+" or the "-" signs to decrease or increase the flow rate. Adjustable drippers are ideal for balancing systems that have a few water-hungry plants on the same line as plants that require less water.

Note: Adjustable drippers use a lot of water. It is very easy to overtax a system when using many adjustable drippers that are operating fully open.